Home / 10,185.03-15,278.31-3,518.79

Finding the Fourth Proportional to 10,185.03, 15,278.31 and 3,518.79

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Solution

The fourth proportional to 10,185.03, 15,278.31 and 3,518.79 is: 5,278.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.03 : 15,278.31 = 3,518.79 : x
  2. Step 2: Convert to fraction form
    10,185.03/15,278.31 = 3,518.79/x
  3. Step 3: Cross multiply
    10,185.03x = 15,278.31 × 3,518.79
  4. Step 4: Simplify right side
    10,185.03x = 53,761,164.44
  5. Step 5: Solve for x
    x = 53,761,164.44/10,185.03
  6. Step 6: Final answer
    x = 5,278.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.